Bkeywest,

You can search ebay or google for a wireless card that meets the specs for your motherboard bus listed below. You can also look for a USBwireless adapter that is compatible with Windows xp.

Bus type PCI Express x1 and x16
Bus speed PCI Express:
x1 slot bidirectional speed: 500 MB/s
x16 slot bidirectional speed: 8 GB/sec
PCI Express
Connector One x1
Connector size 36 pins
Connector data width (maximum) One PCI Express lane
PCI Express
Connector One x16
Connector size 164 pins
Connector data width (maximum) 16 PCI Express lanes